//This program will prompt for an integer between 1 and 30, inclusively, and the

Question

//This program will prompt for an integer between 1 and 30, inclusively, and then repeatedly divide the number by 2 until the number reaches 1 or less.
//Each time, print the value of the number before the division by 2 is done.

//For example, if 20 was entered, the output will be : 20 10 5 2 1

#include <iostream>
using namespace std;

int main() {
   int userNum = 0;

   //prompt for and read an int value to userNum

cout << "Enter a value: " << endl;

cin >> userNum;

   //Test if value entered is < 1 or > 30 then display error message
   //and get out of program

   //if valid, print the value entered and
   // then divide this value by 2.
   // Print this new value after division, and keep
   // doing this until the this new value is equal to 1


   cout << endl;

   return 0;
}

------

Help. I am lost with the loops.

Explanation / Answer

#include <iostream>

using namespace std;

int main(){
   int userNum = 0;
//prompt for and read an int value to userNum
   cout << "Enter a value: " << endl;
   cin >> userNum;
//Test if value entered is < 1 or > 30 then display error message
//and get out of program
   if(userNum < 1 || userNum > 30){
       cout << "Error: value entered is < 1 or > 30" << endl;
       return 0;
   }
//if valid, print the value entered and
// then divide this value by 2.
// Print this new value after division, and keep
// doing this until the this new value is equal to 1
    while(userNum != 1){
        cout << userNum << " ";
        userNum = userNum / 2;
    }
    cout << userNum << endl;
   return 0;
}

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